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Pollen morphology of some species of the genus Sansevieria petagna (Asparagaceae)

100%

Acta Biologica Cracoviensia. Series Botanica

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2017

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tom 59

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nr 2

Pollen grains of 15 species of the genus Sansevieria were examined using light and scanning electron microscopy. The pollen grains were single, but dyads were also found. The basic shape of the pollen grains (with chemical treatment) was subprolate, prolate and prolate-spheroidal and the pollen grains were large (> 50 mm). The pollen grains observed in SEM were prolate-spheroidal, subprolate, prolate and perprolate. The aperture occupied nearly the entire distal hemisphere. The surface of non-apertural areas was microreticulate, psilate–perforate, fossulate and verrucate. The surface of the apertural area was psilate-perforate-verrucate, microreticulate-verrucategemmate and psilate-perforate. The tectum was homogeneous, with perforations. Our results suggest that some species cannot be separated based on pollen grain morphology, but only may be categorized into their groups. The present study investigated pollen grain morphology in eleven species for the first time in terms of pollen micromorphology and provided some important new data.

2

Pollen morphology of genus Rubus L. Part II. Introductory studies on the Malesian species of subgenus Micranthobatus

100%

Tomlik-Wyremblewska A.

Acta Societatis Botanicorum Poloniae

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2000

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tom 69

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nr 1

3

Pollen morphology of Amygdalus L. [Rosaceae] in Iran

88%

Vafadar M., Attar F., Maroofi H., Mirtadzadini M.

Acta Societatis Botanicorum Poloniae

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2010

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tom 79

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nr 1

63-71

Pollen grain of 16 species and three hybrids of the genus Amygdalus L., representing two subgenera and two sections distributed in Iran were examined by light and scanning electron microscopy. All pollen grains are tricolporate. The shape of grains varies from subprolate through prolate. Regarding outline, in polar view, pollen grains are triangular-circular and in equatorial view, elliptic. Regarding sculpturing of exine, the frequent type like many members of family Rosaceae is striate with or without perforations that can be subdivided into three subtypes: type I (A-B), type II (A-B) and type V. In three species, A. trichamygdalus, A. spinosissima and A. orientalis, exine sculpture type is completely different. In the first species is rugulate, in the second species is reticulate and in A. orientalis, it is gemmate-perforate. Ornamentation of ridges (muri) in the striate sculpture is parallel to ectocolpus. Number of perforations in tectum, diameter of them, striae intervals and the thickness of ridges varies among studied taxa. The striae have different depth and slope. Results showed that among pollen grain characters, shape is useful character solely for separating of taxonomic ranks in Iranian Amygdalus specially in subgeneric or section level.

4

Pollen morphology of genus Rubus L. Part III. Studies on the Malesian species of subgenera Chamaebatus L. and Idaeobatus L.

88%

Tomlik-Wyremblewska A., Van Der Ham R. W. J. M., Kosinski P.

Acta Societatis Botanicorum Poloniae

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2004

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tom 73

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nr 3

The results of pollen morphology of Malesian Rubus species are presented. The pollen samples represented 2 subgenera; 2 species of subgenus Chamaebatus (R. calycinus, R. pectinellus) and 13 species of subgenus Idaeobatus (R. acuminatissimus, R. alpestris, R. archboldianus, R. chrysogaeus, R. copelandii, R. ellipticus, R. ferdinandi-muelleri, R. fraxinifolius, R. niveus, R. lorentzianus, R. macgregorii, R. montis-wilhelmi, R. papuanus). The examination of these species has been made by SEM for the first time and also by LM. Detailed descriptions of the pollen grains are given. As in the majority of Rubus species, pollen grains of both subgenera are isopolar and trizonocolporate. The pollen grains were small for some species of the subgenus Idaeobatus only, medium for both subgenera: Chamaebatus and Idaeobatus. The thickest exine was observed among the species of subgenus Chamaebatus and in R. macgregorii of subgenus Idaeobatus. The ornamentation of the studied pollen has shown a great variability. Except for the typical striate ornamentation of the genus, rugulate (R. archboldianus), striatescabrate (R. lorentzianus) and striate-rugulate (R. macgregorii) ornamentation has been observed. New Guinean morphologically similar pinnate Rubus ferdinandi-muelleri, R. montis-wilhelmi, R. papuanus, have pollen with specific type of striate pattern, which is characterised by relatively high muri with variable thickness and lumina filled with granules. Some of their muri resemble baculae typical only for R. chamaemorus. The pollen morphology analysis leads to the conclusion that Rubus montis-wilhelmi and R. papuanus of subgenus Idaeobatus are the closest related species and morphologically very close to R. ferdinandi-muelleri. Since Focke placed the latter species in section Pungentes of the subgenus Idaeobatus, and the two first species were unknown to him - the authors suggest to include them into this section. Despite of the different origin and various types of leaves R. chrysogaeus, R. acuminatissimus and R. niveus have shown similarities in pollen morphology and are grouped together. On the basis of the same criteria, R. copelandii, R. ellipticus and R. fraxinifolius could have been grouped together, as well as R. alpestris and R. macgregorii. Trifoliolate R. archboldianus and R. lorentzianus have not shown similarities of pollen ornamentation to each other and to the previous mentioned species.

5

Pollen morphology of some Centaurea L., Psephellus Cass. and Cyanus Miller taxa

75%

Ozler H., Kaya Z., Pehlivan S.

Acta Biologica Cracoviensia. Series Botanica

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2009

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tom 51

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nr 2

53-66

The pollen morphology of 29 taxa, 24 of which are endemic to Turkey, was investigated in detail by light and scanning electron microscopy. LM examination showed pollen grains to be tricolporate, rarely tetracolporate, isopolar, radially symmetrical, subprolate, spheroidal-subprolate, operculate, tectum perforate, scabrate and microechinate. P. pecho Albow. and P. appendicigera C. Koch resemble the Montana type, C. pichleri subsp. pichleri Boiss. and C. pichleri subsp. extrarosularis (Hayek & Siehe) Wagenitz resemble the Cyanus type, and C. pseudoscabiosa subsp. pseudoscabiosa Boiss.& Buhse are consistent with the Dealbata type, C. pestalozzae Boiss. and C. carduiformis subsp. carduiformis DC. with the Scabiosa type, and the other taxa with Wagenitz's Jacea type

6

Microsporangia and pollen morphology of Ginkgo biloba cultivars

75%

Korszun S., Klimko M.

Dendrobiology

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2014

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tom 71

Morphological features of microsporangia and pollen grains from cultivated plants of Ginkgo biloba were examined using light and scanning microscopy. The sporophylls bear mainly two pendulous microsporangia; three or four were rarely found. The sporangia dehisce along a longitudinal slit and are characterized by reticulate primary sculpture. The basic shape of pollen grains is prolate and perprolate (rarely spheroidal) and they possess a single aperture, which extends from one extremity of the pollen grain to the other. The surface is rugulate, folded, psilate, psilate-slightly striate, regularly striate and fossulate. Perforations are present. Different types of sculpture were found on the same specimens. Our results suggest that although some cultivated plants are morphologically well characterized by habit and shape of leaves, they cannot be separated based on microsporangia and pollen grain morphology. In our investigations the microsporangia and pollen grain micromorphology of eight cultivars of Ginkgo were studied for the first time, providing some important new data.

7

Pollen morphology of Pinus uliginosa Neum. and Pinus uncinata Ramond ex DC in an experimental culture

75%

Klimko M., Bykowska J.

Steciana

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2015

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tom 19

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nr 3

Pollen grains of Pinus uliginosa and P. uncinata were examined by light and scanning electron microscopy. The pollen grains were bisaccate and monosulcate. The corpus-saccus attachment was distinct. The pollen corpus exine sculpture was verrucate-rugulate and deeply sculptured. The surface of the tectum was with or without small grana and it was perforate. The saccus sexine ornamentation was reticulate and irregularly perforate. The tectum surface characters in the proximal and distal view of the corpus and saccus were less variable and they did not provide good criteria to identify the species under study. Among the P. uncinata from the Forest Arboretum there were differences observed in the size, shape and height of elevation and sculpture on the corpus between pollen grains of the same specimen. This study of the pollen grain morphology of the corpus and saccus provided some important new data.

8

Characteristics of chosen species pollen of genus Taraxacum Wigg.

75%

Marciniuk J.

Acta Biologica Cracoviensia. Series Botanica. Supplement

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2005

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tom 47

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nr 1

9

Pollen morphology of Quercus (subgenus Quercus, section Quercus) in Iran and its systematic implication

75%

Panahi P., Pourmajidian M. R., Pourhashemi M.

Acta Societatis Botanicorum Poloniae

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2012

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tom 81

|

nr 1

For the first time, pollen morphology of 9 (4 spp. and 5 subspp.) taxa representing lobed leaved oaks of Iran in the family of Fagaceae has been examined and illustrated using light microscopy and scanning electron microscopy of acetolysed material. Detailed pollen morphological characteristics are given for Quercus section. The pollen grains are single, isopolar, radially symmetrical, tricolpate, tricolporoidate or tricolporate. Pollens were studied to show all possible characteristics like shape, size, apertures, wall thickness, etc., with special reference to the specific features of each pollen type such as structural, sculptural and suprasculptural patterns. There is considerable variation in pollen morphology between taxa so that, three types of pollen shape, five types of structural pattern, two types of sculptural pattern, five types of suprasculptural pattern and three types of perfora distribution are defined. Furthermore, the relationship between pollen morphology and taxonomy is discussed. Overall, pollen characters are shown to be a useful and informative tool for assessing taxonomic position within Quercus section in Iran.

10

Pollen morphology of Polish species of the genus Rosa - I. Rosa pendulina

75%

Wronska-Pilarek D., Lira J.

Dendrobiology

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2006

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tom 55

65-73

The morphology and variability of pollen of Rosa pendulina L. were studied. The material came from 10 native localities of this species. 300 pollen grains were examined. It was established that the diagnostic features of pollen grains of R. pendulina L. were: an elongated, narrow operculum, a poorly developed exine sculpture, long ectocolpi (a low value of the apocolpium index), and the predominance of grains elongated in shape. The results obtained usually correspond to data supplied by other palynologists. A statistical analysis of 10 quantitative grain characteristics showed their variability to be rather low. The highest variability was found to occur in two traits connected with d (the distance between the apices of two ectocolpi). Statistical studies revealed dependences among the grains from the 10 analysed localities

11

Pollen morphology in the tribe Nigelleae (Ranunculaceae): a worldwide palynological investigation into the species

75%

Isik S., Donmez E. O., Aydin Z. U., Donmez A. A.

Acta Biologica Cracoviensia. Series Botanica

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2019

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tom 61

|

nr 1

12

Pollen morphology of some European Sorbus species

75%

Bednorz L., Fujiki T., Makohonienko M.

Roczniki Akademii Rolniczej w Poznaniu. Botanika

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2003

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tom 06

This paper presents morphology of pollen grains of four European Sorbus species: S. arranensis Hedl., S. aucuparia L., S. hybrida L., S. mougeotti Soy.-Will. & Godr. The importance of exine sculpture details in taxonomy is underlined.

13

Pollen morphology of some Turkish Crocus L. [Iridaceae] species

75%

Isik S., Donmez E. O.

Acta Biologica Cracoviensia. Series Botanica

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2006

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tom 48

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nr 1

Pollen grains of 29 Turkish taxa of genus Crocus L. belonging to Iridaceae were examined by light and electron microscopy. The pollen of Crocus is spheroidal in shape, with a thin exine characterized by echinate (spinulate)-microperforate sculpture and a relatively thick intine. Three types of aperture are recognized: a spiral furrow, more or less extensive furrows, and short furrows. Spiral furrows appear to be the most frequent aperture type among the Turkish Crocus species. Apertures vary within some species. The results are compared with those on the pollen morphology of Crocus species previously investigated by several European workers.

14

Morphological differentiation of Primula veris L. pollen from natural and cultivated populations

75%

Morozowska M., Idzikowska K.

Acta Societatis Botanicorum Poloniae

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2004

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tom 73

|

nr 3

Micromorphological characterisation and the comparative statistical analysis of the size of Primula veris L. pollen grains collected in three natural and three cultivated populations were done. Observations were carried out with SEM. The obtained measurements were analysed with the use of one-way ANOVA, Kruskal-Wallis Test and the Student-t Test. Pollen grains from long-styled ('pin') flower-morphs were mainly 6 colpate and from shortstyled ('thrum') flower-morphs 8 colpate. Colpi of some grains from 'thrum' flowers were 'sinuous' and 'circular', and they incised into the apocolpium zone. Ornamentation of 'pin' pollen grains was microreticulate, with lumina up to 0.8 μm wide, and for pollen grains from 'thrum' flowers was reticulate and eureticulate with lumina 1.1-1.7 μm wide. In lumina of mesocolpium area some free columellae were observed. Pollen grains from 'thrum' flower-morphs were more variable in size, both in natural and in cultivated populations, than grains from 'pin' flower-morphs. The differences in mean length (P) and breadth (E) of pollen grains from 'thrum' flowers collected in cultivated populations were statistically important (FP = 3.154 for the critical F005 = 3.098; K-We = 7.469 for the critical Test value α=005 = 5.991). Pollen grains from 'thrum' flowers were bigger when coming from plants growing in natural populations (tE = 2.784 for the critical Test value α=005 = 2.001).

15

Morphological diversity of pollen from selected species of the genus Taraxacum, according to their ploidal level

75%

Marciniuk J., Rudzzinska-Langwald A.

Acta Agrobotanica

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2008

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tom 61

|

nr 1

The study of the morphology of pollen concerned eight species of the genus Taraxacum. Seven types were chosen with a different number of chromosomes belonging to the section Palustria: Taraxacum paucilobum 2n = 3x = 24, T. subdolum 2n = 3x =24, T. subpolonicum 2n =3x = 24, T. vindobonense 2n = 4x = 32, T. trilobifolium 2n = 4x = 32, T. mendax 2n = 5x = 40, T. portentosum 2n =? and one type from the section Obliqua – T. platyglossum 2n =?. Pollen from all the examined species was observed by SEM microscopy. A distinct relation exists between the morphology of pollen and the way of reproduction. Pollen of triploidal species, being compulsory apomicts, is characterized by a great variability of the size and a high percentage of deformed pollen grains. Tetraploids, being optional apomicts, produce regular pollen with a relatively even size. The regular type of pollen in pentaploidal Taraxacum mendax and in species with an unknown number of chromosomes (Taraxacum portentosum and T. platyglossum) suggests that these taxa are optional apomicts.

16

Pollen morphology of Ukrainian species of the genus Pedicularis L. (Orobanchaceae Vent.)

63%

Peregrym O. M., Tsymbalyuk Z. M., Mosyakin S. L.

Biodiversity: Research and Conservation

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2011

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tom 24

17

Investigation on the pollen morphology of traditional cultivars of Prunus species in Sicily

63%

Geraci A., Polizzano V., Marino P., Schicchi R.

Acta Societatis Botanicorum Poloniae

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2012

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tom 81

|

nr 3

In this study pollen grains of 13 cultivars and 3 rootstocks belonging to 5 species (P. armeniaca, P. domestica, P. dulcis, P. persica, P. avium) of the genus Prunus collected from North-East Sicily were examined for the micromorphological characterization through the scanning electron microscopy (SEM). The length of polar axis (P) and the equatorial diameter (E) of grain, P/E ratio, the length of colpi (C), diameter of perforations (DP) and the number of perforations in 25 μm2 (PN), the width of muri (WM), the distance between muri (DM) and their number in 25 μm2 (MN), the width of grooves (WG) were measured and their variation was compared among studied taxa. Moreover multivariate statistical analysis was carried out to distinguish morphometric information from measured parameters. All pollen grains are trizonocolpate, isopolar, medium-large sized and their shape varies from prolate to perprolate. Regarding outline pollen grains are subtriangular in polar view and elliptic in equatorial view. Exine sculpturing is striate with perforations on grain surface. The arrangement of ridges appears roughly parallel but too sloped (sometimes curved) compared to polar axis, or branched and oriented in different directions, or perfectly parallel or more irregular with bifurcated ridges often sinuous. The analyses showed a great variability (particularly in P. domestica cultivars) related in some cases to the diversity in the morphological features of the leaves and the fruits of the investigated entities.

18

Pollen morphology of Polish species of genus Rubus - Part I. Rubus gracilis

63%

Wronska-Pilarek D., Malinski T., Lira J.

Dendrobiology

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2006

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tom 56

69-77

Pollen morphology and pollen variability of Rubus gracilis were studied. A total of 260 grains from 13 natural Polish localities were examined. Important characteristics include: a stretched bridge; a visible pore area and endopores; ectocolpi arranged regularly, more or less evenly spaced or, more rarely, joining one another in the apocolpium, long (79.3% length of the polar axis) and narrow; exine sculpture striate, distinct; striae and muri of equal width, rather narrow; striae usually running parallel to the polar axis, sometimes forming semicircles in the apocolpium zone; with distinct perforations. The size, outline and shape turned out to be poor criteria when identifying the species. A statistical analysis of 10 quantitative grain characteristics showed their little variability. The highest variability was found to occur in two traits connected with d (the distance between the apices of two ectocolpi). Statistical studies revealed no differences among the grains from the individual localities, likely the result of apomixis.

19

Pollen morphology of selected European species of the genus Allium L. (Alliaceae)

63%

Wronska-Pilarek D., Halbritter H., Krzyminska A., Bednorz L., Bocianowski J.

Acta Scientiarum Polonorum. Hortorum Cultus

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2016

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tom 15

|

nr 4

The pollen morphology of eight species from three subgenera and five sections of the genus Allium L. was studied by LM and SEM (i.e.: A. angulosum, A. carinatum, A. senescens subsp. montanum, A. oleraceum, A. scorodoprasum, A. ursinum, A. victorialis and A. vineale). The material came from natural sites of these species located in Poland, Czech Republic, Austria and Italy. For measurements a sample consisted of 30 pollen grains. In total, 240 pollen grains were analysed. They were analysed in respect to six quantitative features (i.e.: length of long axis – LA, length of short axis – SA, thickness of exine along long axis – Ex, SA/LA and Ex/LA ratios and length of sulcus) and the following qualitative ones: pollen outline and shape, exine ornamentation. Taxonomic value of these pollen features is considerable, especially on the sections level. On the basis of these features, it is impossible to distinguish individual Allium species but only their groups. The examined features were characterized by moderate (LA, SA and SA/LA) or high variability (Ex, Ex/LA). Among studied species the lowest variability was found in A. victorialis and the highest in A. vineale and A. oleraceum.

20

SEM studies on sporangia and pollen morphology of Gingko biloba cultivars

63%

Klimko M., Bykowska J., Korszun S.

Steciana

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2016

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tom 20

|

nr 3

The present study was conducted to illustrate the micromorphology of mature sporangia and pollen grains of four Ginkgo biloba cultivars: ‘Horizontalis’, ‘Lasiocarpa’, ‘Pragensis’ and ‘Tubifolia’ and is a continuation of earlier investigations on this subject. The sporophylls bear typically two pendulous sporangia, whereas three were found in one cultivar. The sporangia varied in shape from oval, elliptical elongate to boat-shaped and dehisced along a longitudinal slit. The sporangial walls are multilayered. The sculpture of the sporangium is rugose covered with wax crystals (tubules) and the endothecium shows clearly visible fibrous thickening on the wall. The pollen grains are monosulcate, the non-apertural surface is irregularly ridged (striate) or rugulate, with perforations and the germinal aperture (furrow) is covered with verrucae. The current study did not differentiate significantly four cultivars based on sporangia and pollen morphology. The micromorphological traits may be useful for identification and classification of fragments of fossil sporangia and pollen grains.

Ograniczanie wyników

Pollen morphology of some species of the genus Sansevieria petagna (Asparagaceae)

Pollen morphology of genus Rubus L. Part II. Introductory studies on the Malesian species of subgenus Micranthobatus

Pollen morphology of Amygdalus L. [Rosaceae] in Iran

Pollen morphology of genus Rubus L. Part III. Studies on the Malesian species of subgenera Chamaebatus L. and Idaeobatus L.

Pollen morphology of some Centaurea L., Psephellus Cass. and Cyanus Miller taxa

Microsporangia and pollen morphology of Ginkgo biloba cultivars

Pollen morphology of Pinus uliginosa Neum. and Pinus uncinata Ramond ex DC in an experimental culture

Characteristics of chosen species pollen of genus Taraxacum Wigg.

Pollen morphology of Quercus (subgenus Quercus, section Quercus) in Iran and its systematic implication

Pollen morphology of Polish species of the genus Rosa - I. Rosa pendulina

Pollen morphology in the tribe Nigelleae (Ranunculaceae): a worldwide palynological investigation into the species

Pollen morphology of some European Sorbus species

Pollen morphology of some Turkish Crocus L. [Iridaceae] species

Morphological differentiation of Primula veris L. pollen from natural and cultivated populations

Morphological diversity of pollen from selected species of the genus Taraxacum, according to their ploidal level

Pollen morphology of Ukrainian species of the genus Pedicularis L. (Orobanchaceae Vent.)

Investigation on the pollen morphology of traditional cultivars of Prunus species in Sicily

Pollen morphology of Polish species of genus Rubus - Part I. Rubus gracilis

Pollen morphology of selected European species of the genus Allium L. (Alliaceae)

SEM studies on sporangia and pollen morphology of Gingko biloba cultivars